These cardboard pieces are great for shipping and using for magazines especially for comic books keeping it straight inside of a bubbler mailer or using for other great craft ideas typical measurement on this product is.50 Chipboard Sheets 8.5 x 11 inch - 50pt (Point) Heavy Weight Brown Kraft Cardboard for Scrapbooking & Picture Frame Backing (.050 Caliper Thick) Paper Board.. . So point 050, So it's no thicker than a dime or penny. But using 2 of them for a comic book they really help and they protect things they even are great for cutting and smaller or folding to use in baseball cards these are great for dividing these are awesome for a lot of useful hobby products. They're a little bit thicker than the white backing that we use for comic books inside the sleeves possibly twice as thick actually but these are great for shipping out product. And I'll be priority melanies so I'll help you with some of the mailing it gets kind of expensive I believe it's $11 to ship it I'll try to help out a little bit on that. I know when you want something to be used for your little business at least I'll be there safely .  In 12" 10" 3" box. WITH FREE SHIPPING